Spanish
Practice Idea:

Have "Noche de Español" once a week at home. You can
cook something found in a Spanish speaking country (you have more choices
that just tacos....) and have a rule that everybody at the table
has to use whatever Spanish they know to communicate. You'll be surprised
by how much Spanish you actually know if you're forced to use it! Set
up a system where anybody who breaks the rules has to forego dessert or
clean the dishes.